Lecture 7.3 Flashcards Preview

Human Locomotor Systems > Lecture 7.3 > Flashcards

Flashcards in Lecture 7.3 Deck (34):
1

The Lumbosacral joint is a _______ ________ joint

The Lumbosacral joint is a secondary cartilaginous joint

Hyaline cartilage lining the articular surfaces

2

The joint between the sacrum and illium is the....

It is weight bearing?

sacroilliac joint

strong weight-bearer

3

The pubic synphyseal is a _____ cartilaginous joint

secondary

4

The intervertebral disc between L5/S1 is ))) shaped

wedge

5

Lumbar _____ turns to sacral ______

Lumbar lordosis turnsto sacral kyphosis

6

Along with the anterior longitudinal ligament, which other ligaments strengthen the lumbosacral joint?

lumbosacral and illiolumbar ligaments

7

The lumbosacral joint is between the bodies of ___/___

L5/S1

and the articular facet

8

The illiolumbar joint is between the

crest of the illium and the transverse process of L5

9

sacroilliac joint is important for _____ of human body

posture

b/w sacrum and illiac surface of pelvis

10

The sacral _______ makes up the illiosacral joint

The sacral tuberosity makes up the illiosacral joint

(locks up the the illac tuberosity)

11

The interosseus ligaments lies at the sacral tuberosity - this is an example of a ...

The interosseus ligaments lies at the sacral ______ - this is an example of a syndesmosis

12

The syndesmosis in the sacroiliac joint helps to...

pass weight to the pelvic bone from the sacrum

13

There are also anterior and posterior ______ ligaments that assist alongside the interosseous membrane

sacroiliac

14

The ______ligaments converts the lesser sciatic notch into the lesser sciatic foramen

The scarospinous ligaments converts the lesser sciatic notch into the lesser sciatic foramen

15

The accessory ligaments of the sacroilliac joint are..

what are they important for

Sacrospinous and sacrotuberous

Jumping, carrying bags

Any way in which weight is being transferred up from the pelvis - help keep the joint in place

16

The mainline of gravity goes _____ to thWhen there is a tendency for the sacrum to move forward - the _____ ligaments tighten and pull ______- open up the pelvic inlete lumbosacral joint

The mainline of gravity goes anterior to the lumbosacral joint

17

When there is a tendency for the sacrum to move forward - the _____ ligaments tighten and pull ______- open up the pelvic inlet

When there is a tendency for the sacrum to move forward - the interosseous ligaments tighten and pull together - open up the pelvic inlet

18

The sacrum is analagous to the reverse keystone effect - whereby...

the arch helps the hold the sacrum (Keystone) up

The roles are reversed


the tendancy to tilt forward to wight transfer is stopped by the strong ligaments (interosseous) that lock in place and pull the "arch" back into position

19

The illiosacral ligaments relax during ______

pregnancy

20

the pubic symphysis works a a "tie-beam" prevents separation _____ and resisting compression forces via ____

the pubic symphysis works a a "tie-beam" prevents separation laterally and resisting compression forces via femora

21

What are the ligaments of the pubic symphysis

Superior - along the pubic crest

arcuate - underneath

anterior/posterior

22

The pubic symphysis is reinforced by criss-crossing fibres from _____ muscles

The pubic symphysis is reinforced by criss-crossing fibres from abdominal muscles

23

Anterior and posterior _______ ligaments hold the scarococcygeal joint together

scarococcygeal ligaments

24

The pretzel concept explains how pelvic fractures on one side will cause..

a fracture on the other side as well

25

what is spondylolysis

a defect in the pars interarticularis of the vertebral arch.[1] The great majority of cases occur in the lowest of the lumbar vertebrae (L5), but spondylolysis may also occur in the other lumbar vertebrae, as well as in the thoracic vertebrae.

26

Spondylolythesis is...

Spondylolisthesis is the forward displacement of a vertebra, especially the fifth lumbar vertebra, most commonly occurring after a break or fracture



clearly worse than spondylolysis- sciatic nerve in danger

27

what are the margins of the hip joint capsule?

acetabular labrum

intertrochanteric line

above
intertrochanteric crest

28

The illiofemoral ligament is __ shaped\

where does it insert?

y shaped

inserts on the intertrochanteric line of the femur

29

The ______ ligament also inserts on the intertrochanteric line of the femur

pubofemoral

30

_______ligaments fibres spiral from posterior side and meet up with the fibres at the _______ line

Ishiofemoral ligaments fibres spiral from posterior side and meet up with the fibres at the intertrochanteric line

31

All 3 ligaments in the hip joint tighten in hip _____ rotation and ______

all 3 ligaments in the hip joint tighten in hip internal rotation and extenion

32

Hip joint stability is best when in ______ , slight ____ and _______rotation

Hip joint stability is best when in extension, slight abduction and internal rotation - ligaments are tightest

33

Hip dislocation is more common in the ____ direction

posterior

Sitting with legs crossed - force from the front

34

What structures are commonly endangered by hip dislocation?

sciatic nerve

Blood supply to femur - medial femoral circumflex artery (from profunda femoris)